US7094917B2 - Processes for refining compositions containing dialkyl carbonates - Google Patents
Processes for refining compositions containing dialkyl carbonates Download PDFInfo
- Publication number
- US7094917B2 US7094917B2 US10/487,615 US48761504A US7094917B2 US 7094917 B2 US7094917 B2 US 7094917B2 US 48761504 A US48761504 A US 48761504A US 7094917 B2 US7094917 B2 US 7094917B2
- Authority
- US
- United States
- Prior art keywords
- rectification
- process according
- boiling impurities
- composition
- mbar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000203 mixture Substances 0.000 title claims abstract description 18
- 238000007670 refining Methods 0.000 title abstract 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 title description 7
- 238000009835 boiling Methods 0.000 claims abstract description 23
- 239000012535 impurity Substances 0.000 claims abstract description 22
- 238000004332 deodorization Methods 0.000 claims abstract description 10
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 8
- 239000000047 product Substances 0.000 claims description 15
- 239000011552 falling film Substances 0.000 claims description 8
- 238000005809 transesterification reaction Methods 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims 6
- 230000008020 evaporation Effects 0.000 claims 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 2
- 239000007789 gas Substances 0.000 claims 2
- 239000011203 carbon fibre reinforced carbon Substances 0.000 claims 1
- 239000007795 chemical reaction product Substances 0.000 claims 1
- 239000008130 destillate Substances 0.000 claims 1
- 239000002537 cosmetic Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- PKPOVTYZGGYDIJ-UHFFFAOYSA-N dioctyl carbonate Chemical compound CCCCCCCCOC(=O)OCCCCCCCC PKPOVTYZGGYDIJ-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001877 deodorizing effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- OSCJHTSDLYVCQC-UHFFFAOYSA-N 2-ethylhexyl 4-[[4-[4-(tert-butylcarbamoyl)anilino]-6-[4-(2-ethylhexoxycarbonyl)anilino]-1,3,5-triazin-2-yl]amino]benzoate Chemical compound C1=CC(C(=O)OCC(CC)CCCC)=CC=C1NC1=NC(NC=2C=CC(=CC=2)C(=O)NC(C)(C)C)=NC(NC=2C=CC(=CC=2)C(=O)OCC(CC)CCCC)=N1 OSCJHTSDLYVCQC-UHFFFAOYSA-N 0.000 description 1
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 1
- 208000008454 Hyperhidrosis Diseases 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- BARWIPMJPCRCTP-CLFAGFIQSA-N oleyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCCOC(=O)CCCCCCC\C=C/CCCCCCCC BARWIPMJPCRCTP-CLFAGFIQSA-N 0.000 description 1
- 208000013460 sweaty Diseases 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C68/00—Preparation of esters of carbonic or haloformic acids
- C07C68/06—Preparation of esters of carbonic or haloformic acids from organic carbonates
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C68/00—Preparation of esters of carbonic or haloformic acids
- C07C68/08—Purification; Separation; Stabilisation
Definitions
- Dialkyl carbonates are interesting new oil components for cosmetic products and are normally obtained by transesterification of dimethyl or diethyl carbonate with relatively long-chain fatty alcohols. Particular preference attaches to the production and use of dioctyl carbonate which is commercially available under the INCI name of Dicaprylyl Carbonate and the registered name of Cetiol® CC (Cognis Deutschland GmbH) [cf. WO 97/47583 (Cognis)].
- carbonates have the disadvantage of a “sweaty” odor so that perfuming is necessary where they are used in cosmetic products. The deodorization with steam normally applied in such cases has proved unsuccessful.
- dialkyl carbonates which would have an improved odor quality in relation to the prior art and which would therefore be suitable for use in cosmetic products.
- the present invention relates, in general, to the field of cosmetics and, more particularly, to a process for the production of oil components of the dialkyl carbonate type, in which products with improved odor properties are obtained.
- the present invention relates to a process for the production of dialkyl carbonates corresponding to formula (I): R 1 OCOOR 2 (I) in which R 1 and R 2 independently of one another represent linear or branched hydrocarbon radicals containing 6 to 22 carbon atoms and 0 or 1 to 3 double bonds, by transesterification of C 1-4 dialkyl carbonates with C 6-22 alcohols, characterized in that
- the invention is based on the observation that the odor problem with dialkyl carbonates is attributable to very different impurities which can only be removed by different process measures. It has surprisingly been found that the combination of two rectification steps and one deodorization step ultimately yields a product which is satisfactory from the odor perspective and which may be used without additional perfuming in cosmetic products.
- the unwanted low-boiling impurities are removed in the first step.
- the bottom product is then subjected to a second rectification in which the high-boiling impurities are left in the bottom of the column and only the distillate is subsequently used. It has proved to be particularly advantageous—because less damage is done to the materials used—to evaporate the crude transesterification mixture and/or the distillate obtained as intermediate product in a combination of thin-layer and falling-film evaporators.
- the rectification itself is carried out in particular in columns with structured packings which preferably have a pressure loss of less than 1–2 mbar/m.
- the first rectification is normally carried out at temperatures (bottom) in the range from 180 to 250° C.
- the second rectification is normally carried out at temperatures (bottom) in the range from 150 to 250° C. and under a reduced pressure (head) of 0.01 to 0.5 mbar and preferably at temperatures (bottom) in the range from 150 to 180° C. and under a reduced pressure (head) of 0.01 to 0.5 mbar.
- the deodorization is generally carried out in a column under a reduced pressure of 10 to 100 mbar using either steam or inert gases, preferably nitrogen.
- the working up of a technical dioctyl carbonate was carried out in two coupled rectifying columns each with a 0.5 m EX packing (Sulzer AG) and a deodorizing column.
- the column diameters were 30 mm.
- the crude transesterification mixture was evaporated in a combination of thin-layer and falling-film evaporators and delivered to the first rectifying column where the head pressure was 5 mbar, the bottom temperature 185° C., the pressure loss ca. 9 mbar and the reflux ratio 5. 43.5% by weight low-boiling distillate and 56.5% by weight valuable product were obtained at the bottom of the column.
- the bottom product was then evaporated in the same way and delivered to the second rectifying column where the head pressure was 0.1 mbar, the bottom temperature 176° C., the pressure loss ca. 9 mbar and the reflux ratio 3.
- the subsequent deodorization was carried out with nitrogen at 100° C. in a separate column. The product obtained was completely odorless, even after storage for 6 months.
- FIG. 1 is a flow chart of the process.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Fats And Perfumes (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Description
R1OCOOR2 (I)
in which R1 and R2 independently of one another represent linear or branched hydrocarbon radicals containing 6 to 22 carbon atoms and 0 or 1 to 3 double bonds,
by transesterification of C1-4 dialkyl carbonates with C6-22 alcohols, characterized in that
- (a) the crude transesterification mixture is subjected to a first rectification in which the low-boiling impurities are distilled off,
- (b) the “bottom” product thus obtained is subjected to a second rectification in which the high-boiling impurities are removed and
- (c) finally, in a deodorizing column, the distillate thus obtained is freed from medium-boiling impurities, more particularly odor carriers, either with steam or with inert gases.
Claims (15)
R1OC(O))OR2 (I)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10140846A DE10140846A1 (en) | 2001-08-21 | 2001-08-21 | Process for the preparation of dialkyl carbonates |
DE10140846.3 | 2001-08-21 | ||
PCT/EP2002/009042 WO2003018527A1 (en) | 2001-08-21 | 2002-08-13 | Method for the production of dialkyl carbonates |
Publications (2)
Publication Number | Publication Date |
---|---|
US20040242914A1 US20040242914A1 (en) | 2004-12-02 |
US7094917B2 true US7094917B2 (en) | 2006-08-22 |
Family
ID=7696063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/487,615 Expired - Lifetime US7094917B2 (en) | 2001-08-21 | 2002-08-13 | Processes for refining compositions containing dialkyl carbonates |
Country Status (6)
Country | Link |
---|---|
US (1) | US7094917B2 (en) |
EP (1) | EP1419133B1 (en) |
JP (1) | JP4274938B2 (en) |
DE (2) | DE10140846A1 (en) |
ES (1) | ES2278999T3 (en) |
WO (1) | WO2003018527A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8680226B1 (en) | 2012-12-21 | 2014-03-25 | Saudi Basic Industries Corporation | Method for alcoholysis of acrylonitrile-butadiene-styrene-containing polycarbonate compositions |
US8680227B1 (en) | 2012-12-21 | 2014-03-25 | Saudi Basic Industries Corporation | Manufacture of dihydroxy aromatic compounds by alcoholysis of polycarbonate-containing compositions |
US8846858B2 (en) | 2012-12-21 | 2014-09-30 | Saudi Basic Industries Corporation | Method for alcoholysis of polycarbonate compositions containing flame retardant or acrylonitrile-butadiene-styrene |
US9428627B2 (en) | 2012-12-21 | 2016-08-30 | Sabic Global Technologies B.V. | Manufacture of dihydroxy aromatic compounds by alcoholysis of flame retardant-containing polycarbonate compositions |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100404096C (en) * | 2006-08-15 | 2008-07-23 | 中国石油天然气股份有限公司 | Reaction rectifying tower for producing dimethyl carbonate by urea alcoholysis method |
EP3105215B1 (en) | 2014-02-13 | 2020-07-29 | Huntsman Petrochemical LLC | Dialkyl carbonates, methods for their production and use |
Citations (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2687425A (en) * | 1951-12-21 | 1954-08-24 | Nat Distillers Prod Corp | Production of alkyl carbonates |
US3627810A (en) * | 1970-01-12 | 1971-12-14 | Dow Chemical Co | Process for making organic carbonates |
US4307032A (en) * | 1977-09-07 | 1981-12-22 | Bayer Aktiengesellschaft | Process for the preparation of dialkyl carbonates |
US4348536A (en) * | 1975-05-28 | 1982-09-07 | Bayer Aktiengesellschaft | Odorless catalysts for the synthesis of polyurethanes |
US4390463A (en) * | 1981-11-19 | 1983-06-28 | International Flavors & Fragrances Inc. | Process for augmenting or enhancing the aroma of perfume compositions and colognes utilizing alkyl, aralkyl, and bicycloalkyl methyl carbonates |
US4394221A (en) * | 1979-04-07 | 1983-07-19 | Firma Wilhelm Schmidding Gmbh & Co. | Method of deodorizing and/or deacidifying high-boiling organic compounds, particularly edible oils |
EP0089709A1 (en) | 1982-03-19 | 1983-09-28 | AGIP PETROLI S.p.A. | Synthesis of higher alcohol carbonates and their use as synthetic lubricants |
US4436668A (en) * | 1980-06-07 | 1984-03-13 | Basf Aktiengesellschaft | Preparation of carbonates |
US4599143A (en) * | 1982-07-23 | 1986-07-08 | Hermann Stage | Process for deodorizing and/or physical refining of high-boiling organic edible oils, fats and esters |
GB2176713A (en) * | 1985-06-26 | 1987-01-07 | Stage Hermann | Process and plant for deodorising and/or physical refining of high-boiling liquids |
US4655879A (en) * | 1983-10-28 | 1987-04-07 | Henkel Kommanditgesellschaft Auf Aktien | Glycerol distillation process |
US4691041A (en) * | 1986-01-03 | 1987-09-01 | Texaco Inc. | Process for production of ethylene glycol and dimethyl carbonate |
US4810330A (en) * | 1985-07-10 | 1989-03-07 | Hermann Stage | Process for deodorizing and/or physical refining relatively small, varying charges of high-boiling liquids |
US4838997A (en) * | 1983-05-25 | 1989-06-13 | Atlas-Danmark A/S | Deodorization process for triglyceride oil |
US5009803A (en) * | 1989-04-18 | 1991-04-23 | Agip Petroli S.P.A. | Lubricant fluid for the cold-rolling of steel |
US5076896A (en) * | 1988-06-13 | 1991-12-31 | Henkel Kommanditgesellschaft Auf Aktien | Process for the separation of propylene glycol from fatty alcohols |
US5132447A (en) * | 1990-04-02 | 1992-07-21 | General Electric Company | Method for making organic carbonates |
US5231212A (en) * | 1991-09-03 | 1993-07-27 | Bayer Aktiengesellschaft | Process for the continuous preparation of dialkyl carbonates |
US5266716A (en) * | 1991-12-19 | 1993-11-30 | Bayer Aktiengesellschaft | Process for the splitting of polycarbonates |
US5292917A (en) * | 1991-02-26 | 1994-03-08 | Ube Industries, Ltd. | Process for purifying dimethyl carbonate |
US5338878A (en) * | 1993-01-29 | 1994-08-16 | Amoco Corporation | Alkyl carbonate extraction process |
US5359118A (en) * | 1992-05-15 | 1994-10-25 | Bayer Aktiengesellschaft | Process for the continuous preparation of dialkyl carbonates |
US5387374A (en) * | 1990-12-15 | 1995-02-07 | Henkel Kommanditgesellschaft Auf Aktien | Guerbet carbonates |
US5489703A (en) * | 1995-05-19 | 1996-02-06 | Amoco Corporation | Reaction extraction of alkyl carbonate |
US5543548A (en) * | 1993-07-15 | 1996-08-06 | Bayer Aktiengesellschaft | Process for the preparation of dimethyl carbonate |
US5625091A (en) * | 1995-06-23 | 1997-04-29 | Bayer Aktiengesellschaft | Process for the production of diaryl carbonates |
US5653966A (en) * | 1995-02-02 | 1997-08-05 | Nestec S.A. | Lipid composition for cosmetic products |
WO1997029170A1 (en) * | 1996-02-09 | 1997-08-14 | Henkel Kommanditgesellschaft Auf Aktien | Technical di- and triglyceride mixtures |
WO1997047583A1 (en) | 1996-06-13 | 1997-12-18 | Henkel Kommanditgesellschaft Auf Aktien | Process for producing dialkyl carbonates |
US5731453A (en) * | 1996-03-12 | 1998-03-24 | Ube Industries, Ltd. | Process for producing a diaryl carbonate |
US5834615A (en) * | 1996-09-27 | 1998-11-10 | Ube Industries, Ltd. | Process for producing diaryl carbonate |
US5834275A (en) * | 1994-06-15 | 1998-11-10 | Henkel Kommanditgesellschaft Auf Aktien | Process for deodorizing fermented culture broths with superheated steam |
US6093842A (en) * | 1998-09-25 | 2000-07-25 | General Electric Company | Process for continuous production of carbonate esters |
US20010051740A1 (en) * | 2000-06-12 | 2001-12-13 | Mitsubishi Gas Chemical Company, Inc. | Process for producing dialkyl carbonate |
US6384262B1 (en) * | 2000-12-14 | 2002-05-07 | General Electric Company | Process for the production of diaryl carbonates |
US6420589B1 (en) * | 2000-12-14 | 2002-07-16 | General Electric Company | Process for the production of diaryl carbonates |
-
2001
- 2001-08-21 DE DE10140846A patent/DE10140846A1/en not_active Withdrawn
-
2002
- 2002-08-13 US US10/487,615 patent/US7094917B2/en not_active Expired - Lifetime
- 2002-08-13 DE DE50209022T patent/DE50209022D1/en not_active Expired - Lifetime
- 2002-08-13 ES ES02796225T patent/ES2278999T3/en not_active Expired - Lifetime
- 2002-08-13 WO PCT/EP2002/009042 patent/WO2003018527A1/en active IP Right Grant
- 2002-08-13 EP EP02796225A patent/EP1419133B1/en not_active Expired - Lifetime
- 2002-08-13 JP JP2003523192A patent/JP4274938B2/en not_active Expired - Lifetime
Patent Citations (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2687425A (en) * | 1951-12-21 | 1954-08-24 | Nat Distillers Prod Corp | Production of alkyl carbonates |
US3627810A (en) * | 1970-01-12 | 1971-12-14 | Dow Chemical Co | Process for making organic carbonates |
US4348536A (en) * | 1975-05-28 | 1982-09-07 | Bayer Aktiengesellschaft | Odorless catalysts for the synthesis of polyurethanes |
US4307032A (en) * | 1977-09-07 | 1981-12-22 | Bayer Aktiengesellschaft | Process for the preparation of dialkyl carbonates |
US4394221A (en) * | 1979-04-07 | 1983-07-19 | Firma Wilhelm Schmidding Gmbh & Co. | Method of deodorizing and/or deacidifying high-boiling organic compounds, particularly edible oils |
US4436668A (en) * | 1980-06-07 | 1984-03-13 | Basf Aktiengesellschaft | Preparation of carbonates |
US4390463A (en) * | 1981-11-19 | 1983-06-28 | International Flavors & Fragrances Inc. | Process for augmenting or enhancing the aroma of perfume compositions and colognes utilizing alkyl, aralkyl, and bicycloalkyl methyl carbonates |
EP0089709A1 (en) | 1982-03-19 | 1983-09-28 | AGIP PETROLI S.p.A. | Synthesis of higher alcohol carbonates and their use as synthetic lubricants |
US4599143A (en) * | 1982-07-23 | 1986-07-08 | Hermann Stage | Process for deodorizing and/or physical refining of high-boiling organic edible oils, fats and esters |
US4838997A (en) * | 1983-05-25 | 1989-06-13 | Atlas-Danmark A/S | Deodorization process for triglyceride oil |
US4655879A (en) * | 1983-10-28 | 1987-04-07 | Henkel Kommanditgesellschaft Auf Aktien | Glycerol distillation process |
GB2176713A (en) * | 1985-06-26 | 1987-01-07 | Stage Hermann | Process and plant for deodorising and/or physical refining of high-boiling liquids |
US4810330A (en) * | 1985-07-10 | 1989-03-07 | Hermann Stage | Process for deodorizing and/or physical refining relatively small, varying charges of high-boiling liquids |
US4691041A (en) * | 1986-01-03 | 1987-09-01 | Texaco Inc. | Process for production of ethylene glycol and dimethyl carbonate |
US5076896A (en) * | 1988-06-13 | 1991-12-31 | Henkel Kommanditgesellschaft Auf Aktien | Process for the separation of propylene glycol from fatty alcohols |
US5009803A (en) * | 1989-04-18 | 1991-04-23 | Agip Petroli S.P.A. | Lubricant fluid for the cold-rolling of steel |
EP0393749B1 (en) | 1989-04-18 | 1992-12-30 | AGIP PETROLI S.p.A. | Lubricant fluid for the coldrolling of steel |
US5132447A (en) * | 1990-04-02 | 1992-07-21 | General Electric Company | Method for making organic carbonates |
US5387374A (en) * | 1990-12-15 | 1995-02-07 | Henkel Kommanditgesellschaft Auf Aktien | Guerbet carbonates |
US5292917A (en) * | 1991-02-26 | 1994-03-08 | Ube Industries, Ltd. | Process for purifying dimethyl carbonate |
US5231212A (en) * | 1991-09-03 | 1993-07-27 | Bayer Aktiengesellschaft | Process for the continuous preparation of dialkyl carbonates |
US5266716A (en) * | 1991-12-19 | 1993-11-30 | Bayer Aktiengesellschaft | Process for the splitting of polycarbonates |
US5359118A (en) * | 1992-05-15 | 1994-10-25 | Bayer Aktiengesellschaft | Process for the continuous preparation of dialkyl carbonates |
US5338878A (en) * | 1993-01-29 | 1994-08-16 | Amoco Corporation | Alkyl carbonate extraction process |
US5543548A (en) * | 1993-07-15 | 1996-08-06 | Bayer Aktiengesellschaft | Process for the preparation of dimethyl carbonate |
US5834275A (en) * | 1994-06-15 | 1998-11-10 | Henkel Kommanditgesellschaft Auf Aktien | Process for deodorizing fermented culture broths with superheated steam |
US5653966A (en) * | 1995-02-02 | 1997-08-05 | Nestec S.A. | Lipid composition for cosmetic products |
US5489703A (en) * | 1995-05-19 | 1996-02-06 | Amoco Corporation | Reaction extraction of alkyl carbonate |
US5625091A (en) * | 1995-06-23 | 1997-04-29 | Bayer Aktiengesellschaft | Process for the production of diaryl carbonates |
WO1997029170A1 (en) * | 1996-02-09 | 1997-08-14 | Henkel Kommanditgesellschaft Auf Aktien | Technical di- and triglyceride mixtures |
US5731453A (en) * | 1996-03-12 | 1998-03-24 | Ube Industries, Ltd. | Process for producing a diaryl carbonate |
WO1997047583A1 (en) | 1996-06-13 | 1997-12-18 | Henkel Kommanditgesellschaft Auf Aktien | Process for producing dialkyl carbonates |
US5986125A (en) * | 1996-06-13 | 1999-11-16 | Henkel Kommanditgesellschaft Auf Aktien | Process for the production of dialkyl carbonates |
US5834615A (en) * | 1996-09-27 | 1998-11-10 | Ube Industries, Ltd. | Process for producing diaryl carbonate |
US6093842A (en) * | 1998-09-25 | 2000-07-25 | General Electric Company | Process for continuous production of carbonate esters |
US20010051740A1 (en) * | 2000-06-12 | 2001-12-13 | Mitsubishi Gas Chemical Company, Inc. | Process for producing dialkyl carbonate |
US6384262B1 (en) * | 2000-12-14 | 2002-05-07 | General Electric Company | Process for the production of diaryl carbonates |
US6420589B1 (en) * | 2000-12-14 | 2002-07-16 | General Electric Company | Process for the production of diaryl carbonates |
Non-Patent Citations (1)
Title |
---|
March, J., Advanced Organic Chemistry, 4th ed., Wiley & Sons, New York (1992), at p. 397, Reaction 0-23 ("Alcoholysis of Carboxylic Esters. Transesterification"). * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8680226B1 (en) | 2012-12-21 | 2014-03-25 | Saudi Basic Industries Corporation | Method for alcoholysis of acrylonitrile-butadiene-styrene-containing polycarbonate compositions |
US8680227B1 (en) | 2012-12-21 | 2014-03-25 | Saudi Basic Industries Corporation | Manufacture of dihydroxy aromatic compounds by alcoholysis of polycarbonate-containing compositions |
US8846858B2 (en) | 2012-12-21 | 2014-09-30 | Saudi Basic Industries Corporation | Method for alcoholysis of polycarbonate compositions containing flame retardant or acrylonitrile-butadiene-styrene |
US9428627B2 (en) | 2012-12-21 | 2016-08-30 | Sabic Global Technologies B.V. | Manufacture of dihydroxy aromatic compounds by alcoholysis of flame retardant-containing polycarbonate compositions |
Also Published As
Publication number | Publication date |
---|---|
DE50209022D1 (en) | 2007-02-01 |
JP4274938B2 (en) | 2009-06-10 |
DE10140846A1 (en) | 2003-03-06 |
EP1419133A1 (en) | 2004-05-19 |
EP1419133B1 (en) | 2006-12-20 |
WO2003018527A1 (en) | 2003-03-06 |
JP2005501116A (en) | 2005-01-13 |
ES2278999T3 (en) | 2007-08-16 |
US20040242914A1 (en) | 2004-12-02 |
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